@article{ref1,
title="Studies on excessive demand on the driver in street traffic",
journal="Hefte zur Unfallheilkunde",
year="1969",
author="Hoffmann, H.",
volume="99",
number="",
pages="180-183",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}